JP2001298770A - Physical channel assignment method for mobile communication system and communication method utilizing it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for assigning a physical channel to a user equipment that can efficiently assign a physical channel of the 3rd Generation Partnership Project to the user equipment. SOLUTION: The user equipment transmits a message, to the access preamble AP of which a preamble signature code generated by using any of signatures and a physical channel access pre-ambling code of a 1st uplink generated by using any of x-sets of 1st uplink physical channel pre-ambling scrambling codes allowed for a concerned cell are set, to a base station through a 1st uplink channel, the base station interprets the signature and the type of the 1st uplink code included in the received AP and generates and transmits an acquisition indicator AI to the user equipment. The user equipment receiving the AI uses the channel processing code decided by the approved signature and a physical channel message part scrambling code to the 1st uplink to transmit a message to the base station.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a third generation communication (3r
d Generation Partnership Project (hereinafter abbreviated as 3GPP), which relates to a channel allocation technique of a system, and more specifically, a RACH (Random Access Channel) having an uplink scrambling code and a CP.
The present invention relates to a physical channel allocation method of a mobile communication system capable of efficiently allocating a physical channel of a CH (Common Packet Channel) and a communication method using the same.

[0002]

2. Description of the Related Art Generally, in a 3GPP system,
In an uplink channel used when data is transmitted from a user terminal or equipment (UE) to a base station, RACH is used.
And CPCH have 16 signatures and OVSF
(Orthogonal Variable Spreading Factor) codes and assign physical channels.

[0003] That is, the terminal device has 16 signatures.
(AP # s, # s = 0, 1, 2,..., 15)
Using any one of the signatures, the preamble
Signature (C_{sig, s}) Generates the generated prior
Mumble Signature (C_{sig , s}), Given per cell
One specific physical RACH (PRACH) pre-assigned
Ambbling scrambling code
(S_{r-pre, n}) To use random access prior
Umbling code (C_{pre, n, s}), Then generate
Random access preamble code
(C_{pre, n, s}) In Access Preamble (AP)
And transmit it to the base station.

Here, the random access preamble code (C _{pre, n, s} ) is a sequence (C _{pre, n, s} ) having a complex value as shown in the following equation (1).

(Equation 5)

[0005] Here, k is a chip to be transmitted, and 0, 1, 2,. . . , 4096. In particular, when k = 0, it means a chip transmitted at the beginning of the corresponding time. S is a signature number, and 0, 1, 2,. . . , 15 as integers.

First, a physical channel allocation scheme for RACH according to the prior art will be described with reference to the drawings. FIG.
1 is a configuration diagram showing a code tree for allocating a physical channel of a RACH according to the related art.

As shown, a spreading factor (Spreading
The OVSF code increases as Factor (SF) increases. For example, 16 signatures (AP # 0 to AP #
If the spreading factor is 16 for # 15), each signature corresponds to the OVSF code 1: 1. AP # 0 to AP # 15 represent the types of signatures that the terminal transmits on the AP.

FIG. 33 is a block diagram showing an OVSF code tree according to the prior art, which corresponds to the RACH physical channel allocation code tree of FIG. That is, FIG.
Each node of the tree of OVSF code (C _{ch, SF, k} )
And has a predetermined value.

In the OVSF code (C _{ch, SF, k} ),
SF indicates a spreading factor, and k indicates the order of the OVSF code of the corresponding OVSF code. For example, C
_{ch, 2,1} represents SF = 2, k = 1 and the second OVSF code. Also, C _{ch, SF, k} has a code value assigned to each node in the OVSF code tree, where k may mean a node number. At this time, the code value assigned to the node is
It is obtained as in the following equations (2) and (3). C _{ch, 1,0} −−−− (2)

(Equation 6)

(Equation 7)

[0010] The OVSF code is a channelization code, and uses two types of codes for a data portion and a control portion of a message to be transmitted. In this case, a method for determining two types of codes will be described with reference to the drawings.

FIG. 34 shows an OVSF for allocating an OVSF code when transmitting a PRACH message according to the prior art.
It is a block diagram showing a code tree. For the data and control parts of the message to be transmitted,
As shown in FIG. 34, the OVSF code is allocated according to a specific rule (or formula) along a tree on the right side from a node corresponding to the signature of the terminal itself. For example, in the code tree of FIG. 32, when SF of the signature is 16, O of the data portion of the message is
The SF of the VSF code is 32 to 256, and the SF of the OVSF code of the control part is always 256. Therefore, the PRACH used in each terminal is divided by the OVSF code, and all the PRACHs are of the same type.
Use the scrambling code of the RACH message part.

FIG. 35 is a flowchart illustrating a communication process performed between a terminal and a base station through a RACH physical channel allocated according to the related art.

[0013] The terminal communicates with the AP through the physical channel of the RACH allocated in the same manner as in FIG.
When a specific signature is placed on the base station and transmitted to the base station, the base station transmits an AICH (Acquisition Indicator Channel).
, An acknowledgment signal (hereinafter referred to as AI) is transmitted to the terminal. Therefore, the terminal determines an available OVSF code from a node corresponding to the approved signature, and determines the available OVSF code and a specific PRACH message portion provided per cell. The message (MSG) is transmitted to the base station using the scrambling code. The message (MSG) is composed of a data part and a control part.

FIG. 36 is a block diagram showing the structure of the AICH used in the 3GPP system according to the prior art.
One AICH has 15 access slots (hereinafter, abbreviated as AS; AS # 0, AS # 1,..., A).
S # 15), the length is about 20 ms, and one AS has a length of 40 bits. AS
Is 32 bits (a0, a1, a2, ..., a31)
, And 8 bits (a32, a33,..., A
39) which is not transmitted.

[0015] The AI is a bit allocated to notify whether the signature transmitted from the terminal can be used. Therefore, by analyzing the bits of the AI portion from the terminal, it is determined whether the signature used in the access preamble can be used.

FIG. 37 is a diagram showing a RACH sub-channel used in a 3GPP system according to the related art.
4 is a table showing AS numbers corresponding to (nnel).
As shown, the RA used in the 3GPP system
The number of CH sub-channels is 12 in total, and each sub-channel has a current system frame number (System Fra number).
me Number (hereinafter referred to as SFN). SFN is P-CCPCH
(Primary Common Control Physical Channel), which is information transmitted to the terminal and used to control various timings.

FIG. 38 shows a PRA of a terminal according to the prior art.
FIG. 2 is a configuration diagram illustrating a system for spreading a CH message portion. The control part of the PRACH message has a real value and a channelization code (channelizati
on code; Cc). The data portion of the PRACH message is a real value and is spread by the channelization code (Cd). The two types of spread signals are respectively multiplied by gain factors (Ad, Ac) to generate weighted signals and output as I and Q branches. Next, the signal output to the I branch and Q
The complex signal output to the branch and multiplied by the complex factor (j) is synthesized and converted into a complex signal sequence (I + jQ). Such a complex signal sequence is complex scrambled.
The scramble code (S _{r-msg, n} ) in the PRACH message portion is multiplied and scrambled. At this time, S _{r-msg, n} has a one-to-one correspondence with the PRACH preamble scrambling code S _{r-msg, n} used for the AP.

Similar to the above-described RACH physical channel allocation scheme, a conventional CPCH physical channel allocation scheme will be described with reference to the drawings. In the 3GPP system according to the prior art, the terminal has 16 signature APs #s (# s = 0, 1, 2,..., 1).
5) and an access preamble signature (C _{sig, s} ) generated by using any one of the above methods and one specific PCACH preamble scrambling code (Physical CPCH preamble scr) given for each cell.
ambling code; S _{c-acc, n} ) and PCPCH
Access preamble code (C _{c-acc, n, s} )
And transmit it to the base station on an access preamble (AP).

At this time, the PCPCH access preamble code (C _{c-acc, n, s} ) is a sequence (Seq) having a complex value generated as in the following equation (5).
uence).

(Equation 8)

Here, k is a chip to be transmitted. For example, when k = 0, it means a chip to be transmitted at the beginning of a corresponding time. S is a signature number, and 0, 1, 2,. . . , 15.

Also, the terminal device has 16 signature APs.
Any one of #s (# s = 0, 1, 2,..., 15)
The access preamble signature (C _{sig, s} ) generated by using one of the above-mentioned methods and one specific PCPCH CD access preamble given per cell.
Scrambling code (Physical CPCH collision
detection access preamble scrambling code; S
_A PCPCHCD preamble code (C _{c-cd, n, s} ) is generated using _{c-cd, n} ) and transmitted to a base station on a CD preamble (hereinafter abbreviated as CD).

At this time, the PCPCH CD preamble code (C _{c-cd, n, s} ) is a sequence having a complex value generated as in the following equation (6).

(Equation 9)

Here, k is a chip to be transmitted, and 0, 1, 2,. . . . , 4096.

FIG. 39 is a diagram showing an OVSF code allocation for transmitting a CPCH message according to the prior art.
It is a VSF code tree structural diagram.

The OVSF code is a channelization code (OVSF Orthogonal Variable Spreading Factor).
In this case, two types of codes are required to constitute a data portion and a control portion of a message to be transmitted. However, in a terminal that is approved for CPCH transmission, all terminals need to use one OVSF code set. Select and use the OVSF code. At this time, necessary OVSF codes are assigned to OVSF codes for constituting a data portion and a control portion of a message to be transmitted according to a specific rule (or mathematical formula). The OVSF code for forming the data portion and the control portion of the message is SF = 32 to 256.

At this time, PCPC used in each terminal
H are distinguished by the scrambling code of each PCPCH message part,
Use the same type of OVSF code.

Here, C _{ch, SF, k} is an OVSF code,
SF indicates a spreading element, and k indicates the number of an OVSF code having the corresponding SF.

That is, as shown in FIG. 33, C _{ch, SF, m} is a code value assigned to each node of the OVSF code tree.
They are defined as (3) and (4).

Therefore, 16 PCPCHs per cell
A message part scrambling code and one PCPCH access preamble scrambling code for those APs are assigned, and the scrambling code for each PCPCH message part is assigned.
The code has a one-to-one correspondence with the signature AP # s. That is, the 16 signatures AP # 0-AP
# 15 corresponds to the scrambling code of the 16 PCPCH message portions, respectively, in a 1: 1 relationship.

FIG. 40 is a flowchart illustrating a communication process performed between a terminal and a base station through a CPCH physical channel allocated according to the related art.

The CPCH allocated by the above method
When a terminal transmits a specific signature on an AP to a base station through a physical channel, the corresponding base station transmits an AI (Acquisition Indicato) of an acknowledgment signal through an AP-AICH (Access Preamble-AICH).
r) to the terminal. Then, the terminal transmits Collision Detection (CD) to the base station again, and the base station receives the CD and receives the CD-AICH.
Then, the positive signal (AI) is transmitted to the terminal again.

Here, the CDs are AP # 0 to AP #, which are the same kind of signature as the signature used for the AP.
15 using the PCPCH CD access preamble scrambling code (PCPCH CD access
preamble scrambling code)
Use other parts of the preamble scrambling code.

Then, the terminal sets the available OVS
Using the F-code and the scrambling code of the PCPCH message part corresponding to the signature approved through the AP-AICH,
G). At this time, the message (MSG)
It consists of a data part and a control part.

Here, AP-AICH and CD-AICH
H uses one and the same downlink scrambling code (S _{dl, n} ) and different types of channelization codes. On the other hand, the structure of AP-AICH and C
As described above, the structure of the D-AICH is configured as shown in FIGS.

FIG. 41 shows a conventional terminal using PCP.
Structure showing a system for spreading the message portion of the CH
FIG. Control part of PCPCH message
Has a real value and is spread by the channelization code Cd
The data part of the PRACH message is a real value.
Therefore, it is spread by the channelization code Cd. Two kinds
A class of spread signals are represented by gain factors A
d, Ac) are each multiplied by a signal having a weight.
And output to the I and Q branches. Next
And the signal output to the I branch and the output to the Q branch
And the complex signal multiplied by the complex factor (j) is synthesized.
To a complex signal sequence (I + jQ). Complex signal sequence
Is the complex scrambling code, PCPC
H message part scrambling code (S
_{c-msg, n}) Is multiplied and scrambled. this
When S_{c-msg, n}Is the CPCH prior used for the AP
Embryo scrambling code S_{c- msg, n}When
There is a 1: 1 correspondence.

[0036]

However, in such a conventional physical channel allocation method for RACH, each cell has one PRAC.
The H preamble scrambling code is assigned, and the scrambling code of the RACH message part for the message part to be transmitted is PRACH preamble scrambling code.
There is an inconvenience that the PRACH cannot be reused efficiently because it corresponds to the code 1: 1.

Here, the PRACs having a 1: 1 correspondence are provided.
H message scrambling code and PRA
The CH preamble scrambling code uses a different part of the same long code.

In the prior art physical channel allocation method for CPCH, one cell is assigned one PCPCH preamble scrambling code, and is used for a message portion to be transmitted. Since the scrambling code in the CPCH message portion of the PCP corresponds to the PCPCH preamble scrambling code 1: 1, the PCP
There is a disadvantage that the CH cannot be reused efficiently.

Here, PCPC having a 1: 1 correspondence relationship
H message scrambling code and PC
The PCH preamble scrambling code used a different part of the same long code.

The present invention has been made in view of such a conventional problem, and a first object of the present invention is to provide a plurality of signatures and an extra uplink scrambling code per cell in a 3GPP system. It is an object of the present invention to provide a method for allocating physical channels in a mobile communication system, which can efficiently allocate PHYs.

A second object of the present invention is to provide a plurality of signatures and a plurality of PRACH preamble scramblings per cell in a 3GPP system.
An object of the present invention is to provide a method of allocating physical channels for mobile communication, which can efficiently allocate physical channels when allocating codes.

A third object of the present invention is to provide a plurality of signatures and a plurality of PRACH preamble / scrambling / cells in a 3GPP system.
An object of the present invention is to provide an AICH structure suitable for assigning a code.

A fourth object of the present invention is to provide 16 signatures and a plurality of PRACH preamble scramblings per cell in a 3GPP system.
An object of the present invention is to provide a method of allocating physical channels for mobile communication, which can efficiently allocate physical channels when allocating codes.

A fifth object of the present invention is to provide 16 signatures and a plurality of PRACH preamble / scrambling / cells in a 3GPP system.
An object of the present invention is to provide an AICH structure suitable for assigning a code.

A sixth object of the present invention is to provide a 3GPP system with a plurality of signatures and a plurality of PCPCH preamble / scrambling / cells per cell.
An object of the present invention is to provide a method of allocating physical channels for mobile communication, which can efficiently allocate physical channels when allocating codes.

A seventh object of the present invention is to provide a plurality of signatures and a plurality of PCPCH preamble / scrambling / cells in a 3GPP system.
An object of the present invention is to provide an AICH structure suitable for assigning a code.

An eighth object of the present invention is to provide 16 signatures and a plurality of PCPCH preamble / scrambling / cells in a 3GPP system.
An object of the present invention is to provide a method of allocating physical channels for mobile communication, which can efficiently allocate physical channels when allocating codes.

A ninth object of the present invention is to provide, in a 3GPP system, 16 signatures and a plurality of PCPCH preamble / scrambling / cells per cell.
An object of the present invention is to provide an AICH structure suitable for assigning a code.

A tenth object of the present invention is to provide an AP-AICH and a CD-AICH structure suitable for allocating 16 signatures and a plurality of PCPCH scrambling codes per cell in a 3GPP system. It is in.

An eleventh object of the present invention is to provide a new physical random access procedure.

A twelfth object of the present invention is to provide more than 16 PCPCH access preambles (or scrambling of PCPCH message parts) per cell in a 3GPP system, taking into account 16 signatures and reuse factors. (1) to provide a physical channel allocation method for a mobile communication system capable of efficiently allocating codes.

A thirteenth object of the present invention is to provide a communication method for a mobile communication system using physical channels allocated to a plurality of signatures and a plurality of PRACH preamble scrambling codes per cell. Is to provide.

[0053]

According to a first feature of the present invention, in a 3GPP system, a plurality of PRACH preamble / scrambling codes (SC # m) are used per cell in consideration of PRACH reuse. ), The terminal is assigned the PRACH, so that the 16 signature AP # s (s = 0,..., 1)
5) and PR assigned to the corresponding cell
An access preamble (AP) is transmitted using one SC # m in the ACH preamble scrambling code.

According to the second aspect of the present invention, if the AP transmitted by the first aspect is acknowledged by the base station, the terminal sets the PRACH preamble scrambling code SC # m and 1 used in the AP. 1: own message is transmitted using the scrambling code MSC # m of the PRACH message part having a correspondence relationship of 1: 1. At this time, the SC # m and the MSC # m have a 1: 1 correspondence, and it is more efficient if the two codes use different portions of the same code.

According to a third feature of the present invention, in a terminal to which the first feature is applied, a signature usable for an AP and a PRACH preamble scrambling code are used for transmitting a corresponding RACH. Can be restricted by the upper layer. For this reason, an Access Service Class (AS)
The concept of C) can be used.

According to a fourth aspect of the present invention, a base station transmits a plurality of AICH (Acquisition Indicator Chan) to an AP transmitted from a terminal to which the first to third aspects are applied.
nel: hereinafter, abbreviated as AICH). At this time, the number of AICHs is determined by the number of PRACH preamble scrambling codes allocated to the corresponding cell. As an example, authentication for an AP using a different PRACH preamble scrambling code SC # m is:
Each AICH is in charge. That is, AICH # m authenticates the AP using SC # m. Therefore, SC # m, MSC # m, and AICH # m are 1:
It has a 1: 1 correspondence.

According to a fifth aspect of the present invention, the AICH according to the fourth aspect commonly uses one downlink scrambling code.

According to a sixth aspect of the present invention, each AICH # m according to the fourth aspect uses a different OVSF code as a channelization code. That is, AICH # m
And the channelization codes C _{ch, SFm, Km of} AICH # m have a 1: 1 correspondence.

According to the seventh feature of the present invention, SC # m, MSC # m, AICH # m, C
_{ch, SFm, and Km} have a 1: 1: 1: 1 relationship.

According to an eighth feature of the present invention, in the 3GPP system, when the reuse of the PRACH is considered,
When the terminal is allocated the PRACH for data transmission to the base station, the terminal transmits one of the 16 signatures AP # s (s = 0,..., 15) and a corresponding cell The access preamble AP is transmitted using one SC # m in the PRACH preamble scrambling code assigned to the AP.

According to a ninth feature of the present invention, when the AP transmitted by the eighth feature is acknowledged by the base station, the terminal sets the PRACH used in the access preamble.
Pre-ambling scrambling code SC # m
It transmits its own message using the scrambling code of the PRACH message part which has a 1: 1 correspondence with the message.

According to the tenth feature of the present invention, the signature usable in the access preamble and the PRACH preamble scrambling code during the RACH transmission of the terminal to which the eighth feature is applied are determined by the corresponding RA.
Determined by the "Access Service Class" (ASC) provided by the upper layer for the CH transmission.

According to an eleventh aspect of the present invention, a base station comprises:
Information on whether the on-access preamble transmitted from the terminal to which the eighth and tenth features are applied and various information on the current RACH are transmitted to a normal AICH (Acquisit
ion indicator channel) or a new physical channel (hereinafter referred to as RR
(Abbreviated as ICH).

According to a twelfth feature of the present invention, the eighth, tenth,
The base station corrects the normal AICH structure for the access preamble transmitted from the terminal to which the feature is applied, and then notifies whether or not the access is allowed through the corrected AICH.

According to a thirteenth feature of the present invention, the new physical channel (RRICH) according to the eleventh feature is RA
The normal AICH used for the CH uses the time during which transmission is interrupted within one access slot (AS) (the normal AICH used for the RACH).
Is transmitted for a part of time within one AS of 20/15 msec length, and transmission is interrupted for the remaining time). At this time, the RRICH includes a scrambling code such as AICH to minimize the configuration complexity.
Use the channel classification code. However, different types of codes can be used if desired.

According to a fourteenth feature of the present invention, the tenth, the first,
The information transmission unit of the new physical channel (RRICH) according to the three features is the same as one unit of the access slot used in the normal AICH. That is, 20/1
Information transmitted in one access slot having a length of 5 msec is used as one information unit.

According to a fifteenth feature of the present invention, the eleventh and first features are provided.
The information transmission unit of the new physical channel (RRICH) according to the three features is the same as the 15 units of the access slot used in the normal AICH as needed. That is, information transmitted in 15 access slots having a length of 20 msec is used as one information unit.

According to a sixteenth feature of the present invention, in a 3GPP system, 1
Six signature AP # s (s = 0,..., 15);
When x "PCPCH scrambling codes" are assigned per cell, x PCCH scrambling codes are classified into y "CPCH code channels".

At this time, the PCPCH scrambling code belonging to each CPCH code channel is “PCH
CPCH message part scrambling code "
Are used for the PCP, two of which are selected
CH access, pre-ambling, scrambling,
Code and PCPCHCD access preamble scrambling code.
For example, when x = 64, y = 4. That is,
Four CPCH code channels (Code-cha)
nnel # 0 to Code-channel # 3) are generated, and Code-channel #m has 16 PCPCH scrambling codes.

According to a seventeenth feature of the present invention, in a 3GPP system, considering PCPCH reuse and the like,
16 signature AP # s (s = 0,..., 15)
When allocating x “PCPCH scrambling codes” per cell, the terminal uses the PCPCH
16 AP # signatures to be assigned
s and “P” assigned to the corresponding cell.
The AP is transmitted using any one of the CPCH access preamble scrambling code “APS # m (m = 0,..., 15).

According to an eighteenth feature of the present invention, in a 3GPP system, considering PCPCH reuse and the like,
16 signature AP # s (s = 0,..., 15)
When allocating x “PCPCH scrambling codes” per cell, the terminal sets one of the 16 signature APs #s and the “PCPCHCD access preamble code” allocated to the corresponding cell. The scrambling code "CD-APSC # m (m
= 0,..., M), the PCPCH is allocated by transmitting the CD.

According to a nineteenth aspect of the present invention, in order to perform CPCH transmission in a terminal to which the sixteenth, seventeenth, and eighteenth aspects of the present invention are applied, a signature usable by an AP (or CD) and a PCPCH Access preamble scrambling code (or PCPCH
CD access, pre-ambling, scrambling,
Code) is defined in the upper layer. At this time,
"Access service class" (AS
C) Concepts can also be used.

According to a twentieth feature of the present invention, the sixteenth and first features are provided.
If the AP and the CD transmitted by the features 7, 18, and 19 are acknowledged by the base station, the terminal transmits its own message using the scrambling code MSC # n of the PCPCH message part.

At this time, MSC # n is determined by APSC # m used by AP and AP # s. That is, if the CPCH code channel to which APSC #m belongs is Code-channel #m, MSC #n is determined by AP #s, but APSC #m and MS
C # n is the code-channel defined in the first feature.
It is a code belonging to el # m. Here, the relationship between m, s, and n must be defined in advance.

According to a twenty-first feature of the present invention, for an AP and a CD transmitted from a terminal according to the feature, the base station determines whether to permit a plurality of AP-AICH and CD-AI.
Notify through CH. At this time, the number of AICH
It is determined by the number of PCPCH scrambling codes allocated to the corresponding cell.

As an example, four CPCH code channels (Code-channel # 0 to Code-c)
channel # 3), assuming that there are four A's
P-AICH and CD-AICH are required. That is, the AP-AI using the APSC # m
CH # m performs authentication, and C using CD-APS # m
CD-AICH # m authenticates D. In this case, although the APSC # m and the AP-AICH # m have a 1: 1 correspondence, the CD-APSC # m and the CD-AICH #
There is also a 1: 1 correspondence with m.

According to a twenty-second feature of the present invention, the AP-AICH and the CD-AICH according to the twenty-first feature of the present invention commonly use one similar downlink scrambling code. At this time, all kinds of AICH
Use different OVSF codes as channelization codes. Therefore, there is a 1: 1 correspondence between AP-AICH # m and its channelization code C ^AP _{Ch, sFm, km} ,
CD-AICH # m and its channelization code C ^CD
_{Ch, sFm, and km} have a 1: 1 correspondence. Also, any C
^AP _{Ch, ^sFm, km} and C ^CD _{Ch, sFm,} not the same as the _km.

According to a twenty-third feature of the present invention, the AP-AICH according to the twenty-first feature of the present invention uses one and the same downlink scrambling code, and the CD-AICH also has the same. One downlink scrambling code is commonly used.

However, the downlink scrambling code used by the AP-AICH and the CD-AICH
Should be different from the downlink scrambling code used, so there are all two downlink scrambling codes.

At this time, each AP-AICH has a different O
Using the VSF code as the channelization code, each C
D-AICH also uses different OVSF codes as channelization codes. That is, AP-AICH # m
And its channelization code C ^AP _{Ch, sFm, km} :
1, the CD-AICH # m and its channelization code C ^CD _{Ch, sFm, km} have a 1: 1 correspondence. However, any C ^AP _{Ch, sFm, km} and C ^CD _{Ch, sFm, km} are either the same or different.

According to a twenty-fourth feature of the present invention, in the 3GPP system, 16 signature AP # s (s = 0,..., 15) and x “PCPCH scrambles per cell” are used for PCPCH reuse. Ring code "
Are assigned, x PCCH scrambling codes are classified into y code groups. At this time, the PCPCH scrambling codes belonging to each code group are used as “PCPCH message part scrambling codes”, and two selected from them are used as “PCPCH access preamble scrambling codes”. And "PCPCHCD access preamble scrambling code". For example, if x = 64, y = 4
It is. That is, four code groups are generated,
Each code group has 16 PCPCH scrambling codes.

According to a twenty-fifth feature of the present invention, in the 3GPP system, when PCPCH reuse is considered, in order to allocate a PCPCH to a terminal, 16 signatures AP # s (s = 0,..., 15) ) And the “PCPCH access preamble scrambling code” A assigned to the corresponding cell.
Access Preamble (Access Preamble) using any one of PSC # m (m = 0,..., M)
mble; AP).

According to a twenty-sixth feature of the present invention, in a 3GPP system, when PCPCH reuse is considered, one of the 16 signature APs #s is assigned to a PCPCH to allocate a PCPCH to a terminal. "PCPCHCD access preamble scrambling code" CD-APSC # m assigned to the cell
(M = 0,..., M) to transmit the collision detection CD.

According to a twenty-seventh feature of the present invention, in order to perform CPCH transmission from a terminal according to the twenty-fifth and twenty-sixth features of the present invention, a signature usable by an AP (or CD) and a PCPCH access preamble The scrambling code (or PCPCHCD access preamble scrambling code) is determined by an upper layer in order to perform the corresponding CPCH transmission. At this time, the concept of “access service class” (ASC) may be used.

According to a twenty-eighth feature of the present invention, the twenty-fifth, second
If the AP and CD transmitted by the six features are acknowledged by the base station, the terminal transmits its message using the scrambling code MSC # n of the PCPCH message part. At this time, MSC # n is determined only by APSC # m and AP # s used by the AP. That is, when a code group is determined by APSC # m, MSC # n is determined by AP # s.

Here, APSC # m and MSC # n
Is a code belonging to the same code group as the code defined in the first feature.

According to a twenty-ninth feature of the present invention, the twenty-fifth, the second
The base station determines whether or not the AP and the CD are allowed and the current general information transmitted from the terminal according to the six characteristics.
Notify via ICH and / or new physical channel. Hereinafter, a new physical channel is referred to as CRICH (CP
CH Reuse Indicator Channel).

According to a thirtieth feature of the present invention, the base station corrects the structure of the existing AICH and determines whether to permit the AP transmitted from the terminal according to the twenty-fifth and twenty-sixth features of the present invention. Notify via AICH. This method is another modification of the sixth feature.

According to a thirty-first feature of the present invention, the transmission of the new physical channel (CRICH) according to the present invention is interrupted within one access slot (AS) of the existing AICH used for the CPCH. Take advantage of time. C
The existing AICH used for PCH transmission is 20
The transmission is performed for a part of time within one AS having a length of / 15 msec, and transmission is interrupted for the remaining time. At this time, the CRICH uses a scrambling code such as AICH and a channel division code in order to minimize the configuration complexity, but other codes may be used if necessary. .

According to the thirty-second feature of the present invention, the information transmission unit of the new physical channel according to the twenty-ninth and thirty-first features of the present invention is the same as one unit of the access slot used by the existing AICH. For example, 20/15 msec
The information transmitted in one access slot having a length of is used as one information unit.

According to the thirty-third feature of the present invention, the information transmission unit of the new physical channel according to the twenty-ninth and thirty-first features of the present invention may be the same as the 15 units of the access slot used by the existing AICH as needed. used. That is, information transmitted in 15 access slots having a length of 20 msec is used as one information unit.

Communication method for mobile communication system according to the present invention
In the first uplink channel (RAC
H), the terminal establishes a plurality of signatures (AP
#S) a preamble generated using any one of
Le Signature Code (C_{si g, s}) And the corresponding cell
X number of physical channels of the first uplink received
(PRACH) Pre-ambling, scrambling,
Any one of the first uplinks in the code (SC # m)
Physical channel (PRACH) preamble
Generated using scrambling code (SC # i)
First uplink physical channel access performed
・ Pre-ambling code (C_{pre, n, s}) Access
・ Step to transmit to base station on preamble (AP)
Floor and first downlink channel (AICH # m)
Through the terminal, the terminal receives the signature included in the received AP.
And the physical channel screen of the first uplink.
Decoding the type of rambling code and signing
From the base station that generated the AI for notifying the
The terminal receives the approved signature.
Channelization code determined by the
Scramble the physical channel message part of the
Terminal to the base station using the MSC # m
Transmitting the message of the device.

[0093] In the communication method of the mobile communication system according to the present invention, the terminal uses the RACH to generate a preamble signature generated using any one of the plurality of signatures (AP # s).・ Code (C
_{sig, s} ) and x PRACH preamble scrambling codes (SC #) allowed for the corresponding cell.
m) and the PRACH access preamble code (C _{pre, n, s} ) generated using one of the PRACH preamble scrambling codes (SC # i) in the access preamble (AP). ), Transmitting to the base station, and decoding the signature included in the received AP and the type of the PRACH scrambling code through the AICH # m to determine whether the signature is usable. Receiving the AI from the base station that generated the AI, and using the channelization code determined by the approved signature and the scrambling code (MSC # m) of the PRACH message part. And transmitting a message of the terminal to the base station.

[0094] In the communication method of the mobile communication system according to the present invention, the RRI considering the reuse factor of the RACH is considered.
CH # m (ReuseRACHIndicatorCh
an).

Communication method for mobile communication system according to the present invention
, The first uplink channel (CPC
H), the terminal establishes a plurality of signatures (AP
#S) a preamble generated using any one of
Le Signature Code (C_{a- acc},_s) And the corresponding cell
Allowed y second uplink physical channels
(PCPCH-CD) Pre-ambling scramble
Any one of the second addresses in the switching code (CDSC # m).
Uplink physical channel (PCPCH-CD)
Reambling scrambling code (CDSC
#I) Physical of the second uplink generated using
Channel (PCPCH-CD) access preamble
Ring code (C_{c-cd, n, s}A) Collision detection preamble
(CD) for transmission to the base station;
Link channel (CD-AICH # m)
The terminal can detect the possibility of collision by using a CD.
Receiving the AI from the base station that generated the AI for notifying
Perform additional steps.

In the communication method for a mobile communication system according to the present invention, a preamble signature code generated by a terminal using one of a plurality of signatures (AP # s) through a CPCH. (C _{sig, s} )
And any one of the x PCPCH preamble scrambling codes (APSC # m) allowed for the corresponding cell and generated using the PCPCH preamble scrambling code (APSC # i). PCPCH access preamble code (C
_{pre, n, s} ) in the access preamble (AP) and transmitting it to the base station, and the terminal transmits the signature included in the received AP and the PCPCH scrambling through AP-AICH # m. A step of receiving the AI from the base station that has generated the AI that notifies the availability of the signature by decoding the code type, and the terminal transmits a plurality of signatures (AP # s) through the CPCH.
The preamble signature code (C _a-acc , _s ) generated using any one of the above and y PCPCH-CD preamble scrambling codes (CDSC #) allowed for the corresponding cell m) PCP generated using any one of the PCPCH-CD preamble scrambling codes (CDSC # i)
CH-CD access preamble code (C
_{c-cd, n, s} ) on the collision detection preamble (CD)
Transmitting the AI to the base station, receiving the AI from the base station that has generated the AI that notifies the CD that detects the collision through the CD-AICH # m, Transmitting the terminal message to the base station using the channelization code determined by the approved signature and the scrambling code (MSC # m) of the PRACH message part.

[0097] In the communication method of the mobile communication system according to the present invention, AP-AICH # m includes AP-CRICH
#M, and CD-AICH # m includes CD-CR
ICM # m is additionally performed.

[0098]

Embodiments of the present invention will be described below with reference to the drawings. For the physical channel allocation method of the mobile communication system according to the embodiment of the present invention,
This will be described with reference to FIGS.

User terminal or equipment (User Equipment;
The UE generates an access preamble (hereinafter, abbreviated as AP) using the following physical channel allocation method, and transmits the generated AP to the base station.

First, the terminal uses a preamble signature generated by using any one of the 16 signatures (AP # s, # s = 0, 1, 2,..., 15). C _{sig, s} and x PRACH preamble scrambling codes (SC # m, # m = 0, 1, 2,...
The AP is transmitted using any one of the PRACH preamble scrambling codes in x). S
C # m is a quoted expression for convenience of explanation,
_This is the same expression as _{r-pre, n} .

X is a number that determines the reuse factor of the corresponding cell, and may be determined when the system is designed.
The range is 1 ≦ x ≦ X (maximum value). For example, x
= 1 indicates an existing system in which the reuse factor is not considered, and x = X indicates that all the PRACH preamble scrambling codes (SC # m) allocated per cell are used. As a result, the system takes into account the reuse factor as much as possible. For example, X = 1
If it is 6, the range of x will be 1 ≦ x ≦ 16.

When the terminal generates an AP for transmitting the RACH through the PRACH, the signature (AP # s) and the PRACH preamble scrambling code (SC # m) that can be substantially used are as follows. ,
It can be restricted every time each corresponding RACH is transmitted. That is, AP # s and SC # m are determined by an access service class (hereinafter abbreviated as ASC) given from a higher layer of the protocol.

[0103] If the signature (AP # s) and the PRACH preamble scrambling code (SC # m) that can be used by the terminal are restricted by the ASC, physical information for RACH transmission is used. Prior to the start of the random access procedure, the upper layer must inform the terminal of various items defined by each ASC.

The various items include the available signatures defined for each ASC, the RACH code channel group, and the RACH subchannel group for each RACH code channel within the RACH code channel group. Information should be included.

Here, the RACH code channel group means a set consisting of an arbitrary number of RACH code channels out of 16 (= X) RACH code channels, and a RACH subchannel group (RACH sub). -Channel group)
Means a set consisting of an arbitrary number of RACH sub-channels among all 12 RACH sub-channels. At this time, each RACH code channel knows the definition of the subchannel belonging to itself. That is, the definition for the RACH sub-channels belonging to the 16 RACH code channels and the corresponding access slots is grasped. The RACH sub-channel belonging to the RACH code channel and the corresponding access slot can be defined differently or similarly according to the RACH code channel.

FIG. 2 shows that, according to the present invention, the definitions for the RACH subchannels belonging to each RACH code channel and the corresponding access slots are all R channels.
5 is a table showing an example defined identically for an ACH code channel.

FIGS. 3 (A) to 3 (D) show an example of a RAC according to the present invention.
9 is a first group of tables showing an example in which the definitions for the RACH subchannels belonging to the H code channel and the corresponding access slots are respectively defined for all the RACH code channels.

FIGS. 4 (A) to 4 (D) show an example of a RAC according to the present invention.
9 is a second group of tables showing an example in which definitions for the RACH subchannels belonging to the H code channel and the corresponding access slots are respectively defined for all the RACH code channels.

As shown, the RACH code channels (Code-channel # 0 to Code-c)
channel # 15) is a PRACH preamble scrambling code (SC # 0 to SC # 15).
And 1: 1 respectively.

[0110] Therefore, when the terminal sets the RA through the PRACH.
When an ASC is set in an upper layer of a protocol when transmitting a CH, a layer 1 (physical layer) randomly selects one of the signatures and access slots from a signature and an access slot belonging to a given ASC. Select each access slot. Thereafter, the layer 1 transmits the AP according to a predetermined procedure.
At this time, the AP uses the PRACH preamble scrambling code determined by the selected signature and the access slot. That is, the selected slot is assigned to the code channel (C
If the access slot belongs to the access channel belonging to the code channel (Co.
de-channel #m) and a PRACH preamble scrambling code (SC # m) that has a 1: 1 correspondence.

When the AP is transmitted from the terminal to the base station through the above process, the base station determines the signature used for the received AP and the PRACH preamble.
After decrypting the scrambling code type, the AI
The terminal notifies the terminal of the availability of the AP through CH # m.

After ending the acknowledgment for the AP received from the terminal at the base station, the terminal transmits the channelization code determined by the approved signature and the approved P
The message part is transmitted using the scrambling code of the PRACH message part which has a one-to-one correspondence with the RACH preamble scrambling code.

Therefore, all 16 (= X
_{reuse_max} ) PRACH message part scrambling codes.

[0114] The base station notifies the terminal of the permission of the AP transmitted by the procedure from the terminal through the AICH or the RRICH of the new physical channel.

If x = 1, the base station only needs to inform the terminal of whether the signature transmitted from the terminal can be authenticated, and uses the conventional AICH.

If x ≧ 2, the base station notifies the terminal not only whether the signature transmitted from the terminal can be authenticated but also whether the signature can be reused (that is, whether the used PRACH preamble scrambling. Since information on whether or not the code can be authenticated should also be notified, R (= x) AICHs are used.

For example, when two or more terminals transmit an AP to a base station in order to perform RACH transmission, the base station:
For APs using different PRACH preamble scrambling codes, independent A
The terminal is notified of the approval / disapproval using the ICH. That is, the base station notifies the terminal that has transmitted the AP using the PRACH preamble scrambling code (SC # m) of the affirmative fact of the AP to the terminal through AICH # m. At this time, each AICH # m uses a similar downlink scrambling code and a different OVSF code, and for convenience all AICH # m
m can be designed to have the same SF (ie, C _{ch, SFm, Km} = C _{ch, SFKm} ).

FIG. 5 is a block diagram showing a system for transmitting AICH # m from a base station to a terminal according to the present invention.

In the system, as shown,
AICH # 0-AICH for notifying, for example, 16 APs transmitted from the terminal, whether or not to approve the APs
Serial / parallel converter (S / P) that converts # 15 respectively
And a plurality of multipliers and adders.

Hereinafter, the operation of the system configured as described above will be briefly described. The signal converted by the parallel / parallel converter is multiplied by a channel code (C _{ch, SFKm} ), and weights {G _m ^I , G _m ^Q } for adjusting a transmission power ratio are used.
Are converted to a complex signal sequence. After the complex signal sequence is added by the adder, the same downlink scrambling code (S _{dl, n} ) is multiplied by a gain (G) for adjusting the transmission power ratio of the coded signal. After that, it is transmitted to each terminal. Here, in the channel code (C _{ch, SFKm} ), the relationship between Km and AICH # m can be set arbitrarily.

FIGS. 6 and 7 are block diagrams showing a code tree of an OVSF code allocation method for AICH # m transmitted from a base station to a terminal according to the present invention. As shown in FIG. It is a code tree that has been spread to Therefore, the base station transmits the channel code when the SF is 256.

FIG. 8 is a configuration diagram showing an AICH structure according to the present invention. Although the structure of AICH # m can be set arbitrarily, the present invention particularly exemplifies the case where R = 16 and SF = 256. That is, AICH # m according to the present invention
Are 16 AICHs (AICH # 0, AICH #
1,. . . , AICH # 15), and each AICH
Are 15 access slots (AS # 0, AS #
1,. . . , AS # 15), the length of which is about 20 ms, and one AS has a length of 40 bits. AS has 32 bits (a0, a1, a
2,. . . , A31) AI (Acquisition Indicato)
r) part and 8 bits (a32, a33, ..., a3)
9) is composed of a part that does not transmit. The AI is a bit allocated for notifying the availability of the signature transmitted from the terminal before. Therefore, the terminal analyzes the bits of the AI part to determine whether the signature used in the access preamble can be used.

(A ₀ ^m , a ₁ ^m ,
a ₂ ^m,. . . , A ₃₁ ^m ) is expressed as the following equation (7).

(Equation 10)

[0124] Here, AI _s ^m represents an AI for signature AP # s which terminal has transmitted put in AP,
It has any one of {+1, -1, 0}. or,
b _sj is defined as shown in FIG.

FIG. 10 is a flowchart showing a communication procedure of the mobile communication system according to the present embodiment. x = 1
, The base station only needs to notify the terminal of whether the signature transmitted from the terminal is authenticated or not,
The conventional AICH is used. If x ≧ 2, the base station determines whether the terminal can authenticate the signature transmitted from the terminal or not, and whether the signature can be reused (that is, authenticates the used PRACH preamble scrambling code). Information should be notified. For this purpose, a new auxiliary channel such as RRICH is used.

For example, when two or more terminals transmit an access preamble for RACH transmission, a similar signature is used, but an access preamble using a different RACH preamble scrambling code ( Alternatively, the access preambles may use different signatures but use the same PRACH preamble scrambling code. At this time, the base station determines whether the signature can be authenticated based on the existing AICH, and determines whether the PRACH preamble scrambling code can be authenticated based on the RRICH.

FIGS. 11 and 12 are configuration diagrams showing the physical structure of the RRICH. RRICH (R-Reuse Indi
The scrambling code for the downlink and the channel division code used for the cator channel can be set arbitrarily. However, if the scrambling code and the channel division code used in the existing AICH are used, the configuration becomes Complexity can be minimized. For example, assuming that the scrambling code of the AICH, the RRICH, and the channel division code are the same, the SF of the RRICH in FIGS.
6 and k are 8.

If it is desired to transmit more information, the SF should be increased or the SF should be maintained as it is.
What is necessary is to shorten the transmission time of AICH (that is, reduce the number of transmission bits of AICH) and increase the transmission time of RRICH (that is, increase the number of transmission bits of RRICH).

FIG. 11 shows the PRACH according to the present embodiment.
FIG. 9 is a configuration diagram illustrating an RRICH in a case where the base station transmits information desired to be notified to a terminal in one frame unit, including whether a preamble scrambling code is authenticated or not. As shown, each RRICH has 15 access slots (AS; AS # 0, AS #).
1,. . . , AS # 15), and its length is about 20 ms. One AS is, for example, 4096
It consists of a transmission-off part consisting of a chip and RI parts ( _bik , _{bik + 1} , _{bik + 2} , ..., _{bik + k-1} ).

The terminal transmits the RI part (b _ik ,
b _{ik + 1} , b _{ik + 2,.} . . , B _{ik + k-1} ), for example,
{B ₀ , b ₁ ,. . . , B ₁₁₈ and b ₁₁₉ ｝ _k = s are analyzed to confirm whether or not authentication is possible. At this time, a method of generating an authentication signal using each bit is based on 3GPP AIC.
The method performed in H can be used.

FIG. 12 shows the PRACH preamble
Base station wraps scramble code authentication
Information to be notified to the terminal for each access slot
FIG. 3 is a configuration diagram showing an RRICH structure for transmission.
As shown, each RRICH has 15 access
Slot (AS # 0, AS # 1, ..., AS # 1)
5), the length of which is about 20 ms,
One AS is, for example, a transaction composed of 4096 chips.
The mission off part and the RI part (bⁱ _o, bⁱ ₁, b
ⁱ _Two,. . . , Bⁱ _k-1).

The terminal sets the RI part of the RRICH (b ⁱ _o ,
b ⁱ ₁ , b ⁱ ₂ ,. . . , B ⁱ _k-1 ), for example, ｛b ⁱ _o ,
b ⁱ ₁ ,. . . , B ⁱ ₇ ｝ _k = _s are analyzed to confirm whether or not authentication is possible. In this case, the interaction between the RRICH and the AICH can be defined in various ways as needed.

If the base station uses the RRICH to indicate whether the PRACH preamble scrambling code can be authenticated, the AS # on the RRICH
{b ⁱ _o , b ⁱ _{1 ,.} . . , B ⁱ ₇ } are AS # i
AIC of 4096 chip section turned off during transmission period
H can be correlated with the AI portion being transmitted on H. That is, the signature used by the terminal and the PRACH preamble scrambling
When the access slot assigned to the terminal is AS # i to confirm whether the authentication with the code is possible, A
It is possible to determine whether authentication is possible by analyzing the AICH and RRICH corresponding to S # i. At this time, if the terminal is authenticated by the AICH and the RRICH, the terminal transmits a RACH message portion to be transmitted by the terminal.

[0134] On the other hand, if the terminal is a PRACH preamble,
Whether the scrambling code is authenticated
When using the RRICH for
｛Bⁱ _o, B ⁱ ₁,. . . , Bⁱ ₇Bits used for｝
Mapping with RI (Reuse Indicator)
The relationship can be variously set.

FIGS. 13 to 15 show ｛b ⁱ _o ,
b ⁱ ₁ ,. . . , B ⁱ ₇ }, and RI
6 is a table showing a mapping relationship with (Reuse Indicator).

Here, m means the m-th RI- _signature pattern (RI _{signature # m} ).
_{signature # m} is associated with the authentication of the PRACH preamble scrambling code SC # m,
It is expressed as in the following equation (8).

[Equation 11]

Here, RI _m represents authentication for the PRACH preamble scrambling code (SC # m), and has any one of {+1, −1, 0}.

In FIGS. 13 and 25, ASC can be freely specified when x <9, but should be restricted when x> 8. FIG. 6 shows that ASC can be specified without restriction even when x> 8.

On the other hand, in each of the first and second embodiments according to the present invention, the process in which the base station notifies the acceptability of the access preamble transmitted from the terminal through the AICH differs. At this time, the structure of AICH is different between x = 1 and x> 1.

That is, if x = 1, the base station only needs to inform the terminal of whether or not the signature transmitted from the terminal can be authenticated, and thus uses the conventional AICH.

[0141]

(Equation 12)

Here, AIs represents AI for the signature (AP # s) transmitted by the terminal on the AP, and has one of {+1, -1, 0}. B _sj is defined as shown in FIG.

Further, if x> 1, the base station determines whether or not the signature transmitted from the terminal can be authenticated as well as P
It must also inform whether the RACH preamble scrambling code can be authenticated. AI for this
The CH structure is as shown in FIG.

FIG. 17 is a configuration diagram showing an AICH structure for the base station to notify the terminal whether the PRACH preamble scrambling code is authenticated or not when x> 1.

Each AICH is composed of 15 access slots (AS # 0, AS # 1,..., AS # 15), the length is about 20 ms, and one ASCH
Consists of a 32-bit AI and RI part and an 8-bit non-transmitted part.

Here, ｛a ₀ ,
a ₁ ,. . . , A ₁₅ } is the signature AP used
#B ₀ ,
b ₁ ,. . . , B ₁₅ } is an RI part for notifying whether or not the used PRACH preamble scrambling code SC # m can be authenticated.

Here, the bits {a ₀ ,
a ₁ ,. . . , A ₁₅ } are expressed in the following equation (10).

(Equation 13)

Here, AIs represents the AI for the signature AP # s used, and +1, -1,
It has any one of 0 values. Also, c _s and _j are shown in FIG.
8 as defined.

The bits {b ₀ ,
b ₁ ,. . . , B ₁₅ } are represented by the following equation (11).

[Equation 14]

Here, RI _m is the used PRACH
Pre-ambling scrambling code SC # m
And indicates any one of {+1, -1, 0}. Also, C _{m, j} is defined as shown in FIG.

A method of physically allocating the CPCH as another random access channel in the 3GPP system using the above-described RACH and AICH channel allocation methods will be described.

That is, the RACH of the embodiment is changed to the CPCH
AICH, AP-AICH and CD-
Corresponds to AICH. This will be described in more detail.

FIG. 19 is a flowchart showing a communication procedure of the mobile communication system according to the present invention. PCPCH
For transmission, the terminal has 16 signature APs
#S (# s = 0, 1,..., 15) and x PCCH scrambling codes per cell, x PCCH scrambling codes are assigned to y CPCH code channels. Classify into. Each C
All PCPCH scrambling codes belonging to the PCH code channel are used to generate a scrambling code for the PCPCH message part, and two of them are selected and used for PCPCH access preamble scrambling. Code and PCPC
HCD access preamble scrambling code.

For example, if x = 64, all four CPs
A CH code channel is generated. Each CPCH
Code channels are PCPCH scrambled by 16
Has a bling code. That is, all 64 (=
x) PCPCH scrambling codes (C
_{long, l, n}(I)) Gold sequence (Gold seq)
uence).

Here, i represents the i-th bit in all bits constituting the code, and n is, for convenience of explanation,
{0, 1,. . . , 63}. C
_{long, l, n} (i) is classified into 4 (= y) CPCH code channels as follows.

Code-channel # 0: C _{long, l, n} (i), n = 0,1,2, ..., 15 --- (12) Code-channel # 1: C _{long, l, n} (I), n = 16, 17, ..., 31 --- (13) Code-channel # 2: C _{long, l, n} (i), n = 32,33, ..., 47- -(14) Code-channel # 3: C _{long, l, n} (i), n = 48,49, ..., 63 --- (15)

When the terminal uses C _{long, l, n} (i), 64 PCPCH message partial scrambling codes (MSC # n, n = 0,
1,. . . , 63). Therefore, MSC # n
Can be defined as in the following equations (16) and (17).

MSC # n = C _{long, n} (i + 8192), i = 0, 1, 2, ..., 38399 --- (16) MSC # n = C _{long, n} (i + 4096), i = 0, 1, 2, ..., 38399 --- (17)

C in the above equations (16) and (17)
_{long, n} (i) is a long code having a complex value formed using C _{long, l, n} (i).

On the other hand, the PCPCH message partial scrambling code MSC # n is a shot code (C _short , _{l, n)} having a predetermined complex value.
Using (i)), it can be generated as in the following equation (18). MSC # n = C _{short, n} (i), i = 0,1,2, ..., 38399 --- (18)

When the terminal uses C _{short, n} (i), four (= y) PCPCHs per cell are used.
Access preamble scrambling codes (APSC # m, m = 0, 1, 2, 3) and 4 (=
y) PCPCH CD access preamble codes (CD-APSC # m, m = 0, 1, 2,
3) can be defined, for example, as in the following equations (19) and (20).

APSC # m = Clong, l, n (i), i = 0,1,2, ..., 4095 --- (Equation 19) CD-APSC # m = Clong, l, n (i) , i = 0,1,2, ..., 4095 --- (Equation 20)

In the above equations (19) and (20), n
And m can be arbitrarily determined.
#M and CD-APSC # m should be defined by other C _{long, l, n} (i).

In order to simplify the description of the present invention,
The above equations (19) and (20) are replaced by the following equations (21) and (2)
A description will be given in place of 2). APSC # m = C _long , _l , ₁₆ × _m (i), i = 0,1,2, ..., 4095 --- (21) CD-APSC # m = C _long , _l , ₁₆ × _m + ₁ (i), i = 0,1,2, ..., 4095 --- (22) Here, APSC # m (m = 0, 1, 2, 3) and CD
APSC # m (m = 0, 1, 2, 3) is Cod
e-channel #m (m = 0, 1, 2, 3) and 1:
There is a correspondence of 1.

For example, if APSC # m is Code-cha
Assuming that the terminal has a 1: 1 correspondence with nnel # m, that is, when the terminal receives an acknowledgment from the base station using APSC # m, a PCPCH message part scrambling for transmitting a CPCH message part is performed. The code is M belonging to (Code-channel # m)
SC # n is transmitted to the base station. At this time, each C
Each code belonging to the PCH code channel is defined as in the following equations (23) to (26).

Code-channel # 0: APSC # 0, CD-APSC # 0, MSC # n, C _{long, l, n} (i) --- (23) n = 0, 1, 2,. . . , 15 Code-channel # 1: APSC # 1, CD-APSC # 1, MSC # n, C _{long, l, n} (i) --- (24) n = 16, 17,. . . , 31 Code-channel # 2: APSC # 2, CD-APSC # 2, MSC #n, C _{long, l, n} (i) --- (25) n = 32, 33,. . . , 47 Code-channel # 3: APSC # 3, CD-APSC # 3, MSC # n, C _{long, l, n} (i) --- (26) n = 48, 49,. . . , 63

[0167] The user terminal or equipment generates an AP and transmits it to the base station through the following process.

The terminal device has 16 signature AP # s
(S = 0, 1, 2,..., 15) and a preamble signature (C _{sig, s} ) generated using any one of the signatures and x APs allowed for the corresponding cell
Any one of A in SC # m (m = 0, 1,..., X)
The AP is transmitted to the base station using the PSC # m. Here, x is a number indicating a reuse factor of a corresponding cell, and is determined when designing a system, and its range is 1 ≦ x ≦ X
(Maximum value).

At this time, if x = 1, the existing system does not consider the reuse factor. Also, when x = X, all the PCPCH scrambling codes allocated to each cell are used, and the reuse factor is considered as much as possible. For example, assuming that X is 4, x is in the range 1 ≦ x ≦ 4.

When a terminal generates an AP and a CD for transmitting a CPCH to a base station via a PCPCH,
Substantially available AP # s, APSC # m, CD-A
The PSC #m can be restricted every time each CPCH is transmitted. Therefore, the terminal may use available AP # s, APSC # m, CD-APSC # before starting the CPCH access procedure for CPCH transmission.
m, CPCH subchannel group and MSC # n
Should be notified from the upper layers of the protocol.

At this time, in order to transmit the corresponding CPCH, an access service
The class (ASC) concept can be applied. That is, before the CPCH access procedure for performing the CPCH transmission is started, the terminal can use the available signatures, CPCH code channel groups, and CPCH code channel groups defined by each ASC. CP for each CPCH code channel
Matters such as the CH sub-channel group should be signaled to higher layers of the protocol. Where C
The PCH code channel group has a total of 4 (= X
_{reuse_max} ) means a set composed of some of the CPCH code channels, and the CPCH subchannel group is
It means a set composed of several things.

Each CPCH code channel knows the definition information for each sub-channel belonging to itself. That is, the four CPCH code channels have definition information for each CPCH subchannel belonging to them and the access slot corresponding to them.
The definition of each CPCH subchannel belonging to the CPCH code channel and the corresponding access slot is different depending on the CPCH, or
Is the same.

As shown in FIG. 2, the definition of each CPCH subchannel belonging to each CPCH code channel and the corresponding access slot can be similarly configured for all CPCH code channels. .

The definitions for each CPCH sub-channel belonging to each CPCH code channel and their corresponding access slots are shown in FIGS.
As shown in (A), each CPCH code channel can be configured to be different.

For example, when the terminal receives the CP via the PCPCH,
When transmitting a CH to a base station, if a terminal determines a code and a signature that can be used in an upper layer to transmit a corresponding CPCH, a layer 1 (physical layer) becomes usable (or a given ASC). 1) randomly selects one signature and one access slot from each signature and access slot. Next, the layer 1 transmits an AP according to a predetermined procedure. At this time, the AP uses a PCPCH access preamble scrambling code determined by the selected signature and slot. That is, if the selected access slot is an access slot belonging to Code-channel #m, the corresponding AP becomes Code-channel #.
APSC # m belonging to #m is used.

After decoding the type of the signature (AP # s) and APSC # m used in the received AP, the base station determines whether the signature (AP # s) and APSC # m are usable. To the terminal via the AP-AICH.

When a positive signal is found on the AP-AICH from the base station, the terminal transmits a CD again to determine whether a collision is possible. At this time, the CD randomly selects one signature and one access slot from the available signatures (or belonging to a given ASC) and one access slot.
This is the same as when selecting and transmitting P.

Base station receiving CD from terminal can collide
Notify the terminal of information about the rejection via CD-AICH
There are two methods as follows. 1) Each AP
-AICH and each CD-AICH is one down
Common use of link scrambling code
AICH channels use different OVSF codes
Used as the conversion code. That is, AP-AICH
#M and channelization code C of AP-AICH # m^AP
_{ch, SFKm}Are in a 1: 1 correspondence, CD-AICH # m and
And CD-AICH # m channelization code C^CD _{ch, S
FKm}Also have a 1: 1 correspondence. Where arbitrary C^AP
_{ch, SFKm}And C^CD _{ch, SFKm}Are different from each other. 2) Each AP
-AICH is the same downlink scramble
Use a common bling code, and
One downlink scrambling code identical to each other
Can be used in common. However, in case 2)
If there is, the downlink traffic used by each AP-AICH
Used by the scrambling code and each CD-AICH
Should be different from downlink scrambling code
Therefore, all AP-AICHs are different from each other in OVSF code.
Should be used as the channelization code, and all C
D-AICH also uses different OVSF codes
Used as the conversion code. That is, AP-AICH
#M and channelization code C of AP-AICH # m^AP
_{ch, SFKm}Are in a 1: 1 correspondence, CD-AICH # m and
And CD-AICH # m channelization code C^CD
_{ch, SFKm}Also have a 1: 1 correspondence. Where arbitrary C
^AP _{ch, SFKm}And C^CD _{ch, SFKm}Are both the same, or
Are different from each other.

As described in 1), AP-AICH and CD-
The manner in which the AICH uses the same scrambling code and different types of channelization codes will now be described.

If all the transmitted APs and CDs are approved, the terminal transmits the channelization code and the signatures AP # s and APSC # m approved by the AP.
The PCPCH message partial scrambling code (MSC # n) determined by the following equation is determined using the following equation (27).

(Equation 15)

When the terminal transmits the AP and the CD to the base station through the above process, the base station transmits the AP-AI.
The permission of AP and CD is notified via CH and CD-AICH, respectively.

If x = 1, the base station only needs to notify whether the signature transmitted by the terminal is authenticated or not, and therefore, the existing AP-AICH and CD-AICH may be used.

If x is 2 or more, the base station determines whether or not the signature can be re-used (ie, whether the used PCPCH scrambling /
Information on whether or not the code is authenticated is also notified by the following two methods.

1) AP-AIC using R (= x) pieces
Transmission of H When two or more terminals transmit an AP to transmit a CPCH, an AP using a different PCPCH access preamble scrambling code is used.
Is notified of approval / disapproval using independent AP-AICH. That is, PCPCH access
Pre-ambling scrambling code APSC
AP-AICH for approval of AP using #m
Notify via #m. 2) CD-AICH transmission using R (= x) Similarly, when two or more terminals transmit CDs to transmit the CPCH, different PCPCH CD access preamble scrambling.・ Independent CD-AI for each CD using code
Notification of approval is made using the CH. That is, PCP
The approval / disapproval of the CD using the CH CD access preamble scrambling code CD-APSC # m is notified via the CD-AICH # m.

Each AICH has a similar downlink scramble.
Umbrella code and different OVSF codes
Assuming that all AICH SFs are C^AP
_{ch, SF, m},_km= C^AP _{ch, SF, m},_kmAnd C^CD _{ch, SF, m},_km= C^CD
_{ch, SF, m},_kmIs the same as

In this embodiment, R = 4, C^AP _{ch, SF, km}=
C^AP _{ch, SF, km}And C^CD _{ch, SF, km}= C ^CD _{ch, SF, km}Place that is
Will be described.

FIG. 20 shows a case where the base station has 4 (= R) AP-
FIG. 2 is a configuration diagram illustrating a system for transmitting AICH,
Each AP-AICH # m for notifying, for example, four APs transmitted from the terminal, whether or not to approve the APs
It comprises a plurality of serial / parallel converters (S / P) for converting (m = 0, 1, 2, 3), respectively, and a plurality of multipliers and adders.

The operation of the system configured as described above will be briefly described. Each signal converted by the parallel converter is multiplied by a channel code ( ^CAP _{ch, SF, km} ) and then multiplied by a weight {APG _m ^I , APG _m ^Q } for adjusting a transmission power ratio. , Are each converted into a complex signal sequence. After each complex signal sequence is added by the adder, a similar downlink scrambling code (S _{dl, n} ) and a gain (APG) for adjusting the transmission power ratio of the coded signal are obtained.
Are multiplied and transmitted to each terminal.

At this time, C ^AP _{ch, SF, m} , _km km and AP
-The relationship with AICH # m can be arbitrarily determined.

FIG. 21 shows that the base station has 4 (= R) CD-
FIG. 2 is a configuration diagram illustrating a system for transmitting AICH,
For example, CD-AICH # m (m
= 0, 1, 2, 3), and a plurality of serial / parallel converters (S / P), and a plurality of multipliers and adders.

The operation of the system configured as described above will be briefly described. Each signal converted by the parallel converter is multiplied by a channel code (C ^CD _{ch, SF, km} ) and multiplied by a weight {CDG _m ^I , CDG _m ^Q } for adjusting a transmission power ratio. , Are each converted into a complex signal sequence. After each complex signal sequence is added by the adder, a similar downlink scrambling code (S _{dl, n} ) and a gain (CDG) for adjusting the transmission power ratio of the coded signal are obtained.
, And are transmitted to each terminal. At this time,
The relationship between _km of C ^CD _{ch, SF, m} , _km and CD-AICH # m can be arbitrarily determined.

FIGS. 22 and 23 are block diagrams showing a code tree of an OVSF code allocation method for AP-AICH # and CD-AICH # transmitted from a base station to a terminal. It is a spread code tree. FIG. 24 shows the AIC according to the embodiment of the present invention.
In the configuration diagram showing the H structure, AP-AICH # 0 to AP-AICH
AICH # 3 or CD-AICH # 0 to CD-A
This shows a case where ICH # 3 is the same and R = 4 and SF = 256.

As shown in the figure, AP-AICH # m or CD-AICH # m has four AP-AICH # 0.
~ AP-AICH # 3 or CD-AICH # 0 ~ C
D-AICH # 3 and each AP-AICH
#M or CD-AICH # m has 15 access
Slots (AS # 0, AS # 1,..., AS # 15)
The length is about 20 ms, and one A
S has a length of 40 bits. The AS consists of a 32-bit (a0, a1, a2,..., A31) AI part,
8 bits (a32, a33, ..., a39) which are not transmitted. The AI is a bit allocated for notifying the availability of the signature transmitted by the terminal before. Therefore, if the terminal is AI
By analyzing the bits of the portion, it is determined whether the signature used in the access preamble can be used.

Here, {a ₀ ^m , a ₁ ^m ,. . . , A ₃₁ ^m ｝
Can be expressed as in the following equation (28).

(Equation 16)

Here, in the case of AP-AICH # m, AI _s ^m indicates the AI for signature AP # s used for the AP using AP-APSC # m, and Δ + 1, −
1, 0}. Also, CD-AI
In the case of CH # m, it indicates an AI for signature AP # s used for a CD using CD-APSC # m.

Also, b _s and _j can be defined as shown in the table of FIG. FIG. 26 is a flowchart showing a communication procedure of the mobile communication system according to the present invention.

An AP or CD authentication is notified using an auxiliary channel such as CRICH. When two or more terminals transmit an AP and a CD for transmitting the CPCH, whether the signature is authenticated is determined by a normal AP.
Judge based on AICH and CD-AICH. That is, the PCPCH preamble scrambling code (PCPCH access preamble scrambling code)
The authentication of the scrambling code and the PCPCH CD access preamble scrambling code) is determined by AP-CRICH and CD-C.
Judge based on RICH.

AP-CRICH and CD-CRICH
Are, as described above, AP-AICH and CD-AICH
H. The physical structure of the CRICH is the same as that shown in FIGS. The downlink scrambling code and channel division code used for each CRICH can be arbitrarily set, but the scrambling code and channel division code used in normal AP-AICH and CD-AICH are used. When used for AP-CRICH and CD-CRICH, respectively, hardware complexity can be minimized.

In order to briefly describe the embodiment of the present invention,
Assuming that the scrambling codes of the AICH and CRICH are the same as the channel division code, the SF of the CRICH is 2 as shown in FIGS.
At 56, k becomes 8. If it is desired to transmit more information, the CRICH is increased by increasing the SF or shortening the AICH transmission time (ie, reducing the number of AICH transmission bits) instead of keeping the SF unchanged. Transmission time (ie, CRIC)
H transmission bit number is increased).

[0200] As shown in FIG.
The information that the base station intends to notify the terminal, including whether the CPCH preamble scrambling code is authenticated, can be transmitted in units of one frame. At this time, the terminal sets {b _o , b ₁ , b _{2 ,.} . . , B
_{14k + k-1} = {} b o, b 1, b 2,. . . , B ₁₁₉ | _k = ₈
The method of generating an authentication signal using each bit of 3G
A method using PP AICH can be used.

Further, as shown in FIG.
Is PCPCH pre-ambling, scrambling,
Let the base station notify the terminal, including whether the code can be authenticated
Information to be transmitted for each access slot
Can be. That is, the terminal transmits information on AS # i.
｛Bⁱ _o, Bⁱ ₁, Bⁱ _Two,. . . , Bⁱ _k-1｝ = ｛Bⁱ _o,
b ⁱ ₁, Bⁱ _Two,. . . , Bⁱ ₇｝ |_k=₈Using the bits of
To analyze. In such a case, the connection between CRICH and AICH
Interactions can be defined in a variety of ways as needed.
it can. If PCPCH preamble scramble
CRIC to notify whether the bling code is authenticated
If H is used, it belongs to AS # i on CRICH
｛Bⁱ _o, Bⁱ ₁, Bⁱ _Two,. . . , Bⁱ ₇｝ Is a story of AS # i
AICH during 4096 chips that are turned off during the sending period
May be interrelated with the AI part transmitted above
it can. That is, the signature used by the terminal and
PCPCH pre-ambling scrambling code
Assigned to the terminal to check whether the
When the access slot is AS # i, the access slot is assigned to AS # i.
Analyzing the corresponding AICH and CRICH to determine whether
Call At this time, all the data from AICH and CRICH
If the terminal is authenticated, the terminal
To transmit to the base station is determined by equation (27)
PCPCH message partial scrambling code
It is transmitted using the code.

To notify whether PCPCH preamble scrambling code can be authenticated, CRIC
When H is used, {b ⁱ _o , b ⁱ ₁ ,
b ⁱ ₂ ,. . . , B ⁱ ₇ } and RI (R
There are various mapping relationships with I: Reuse Indicator.

[0203] FIGS. 27 and 28, when using the Crich to notify the authentication whether the PCPCH pre Ambling scrambling code, {b ⁱ _o of _{^{CRICH, b i 1, b i}} 2,. . . , B ⁱ ₇ } is a table showing a mapping relationship between each bit used for RI and a RI (Reuse Indicator).

Here, m is the m-th RI-signa
cure pattern (RI_{signature # m}) Means m,
RI_{signature # m}Is a PCPCH preamble ring
The scrambling code (ie, APSC # m and
CD-APSC # m).

[0205] If the FIG. 27 is used, b ⁱ _k of the AICH
Can be expressed as in the following equation (29).

[Equation 17]

Here, RI _m is the PCPCH preamble scrambling code (ie, APS
C # m or CD-APSC # m), and has one of {+1, -1, 0}.

On the other hand, as shown in FIG.
bⁱ _kCan be used in the sense of authentication for each part
You. That is, ｛bⁱ _o, Bⁱ ₁｝, ｛Bⁱ _Two, Bⁱ _Three｝, ｛B
ⁱ _Four, B ⁱ _Five｝, ｛Bⁱ ₆, Bⁱ ₇The value of｝ is {1, 1}
Or {0, 0} sequentially
_{signature # 0}~ RI_{signature # 3}Notify whether authentication is possible.

[0208] Also, the base station notifies the AP and the CD transmitted by the terminal of permission / rejection via the AICH.
If x = 1, the base station only needs to notify whether the signature transmitted by the terminal is authenticated or not.
The H method can be applied as it is. Where ｛a
_{0, a 1, a 2,} . . . , A ₃₁ } can be expressed as in the following equation (30).

(Equation 18)

[0209] Here, AI _s are means AI for signature AP # s used {+ 1, -1, 0}
It has any one of the values. Also, b _s and _j are as shown in FIG. 9 (general AICH signature pattern table). If x> 1, the base station should notify not only the authentication of the signature transmitted by the terminal but also the authentication of the PCPCH preamble scrambling code. In this case, the AICH having the structure shown in FIG. 17 is used.

{A ₀ , a ₁ ,. . . , A ₁₅ } is an AI part for notifying whether the signature AP # s used is authenticated, and {b ₀ , b ₁ ,. . . , B ₁₅ } is the used PCP
This is an RI portion indicating whether the CH preamble scrambling code can be authenticated. That is, ｛b ₀ ,
b ₁ ,. . . , B ₁₅ } are the transmission bits on the AP-AICH, indicate whether the PCPCH access preamble scrambling code APSC # m can be authenticated, and {b ₀ , b ₁ ,. . . , B ₁₅ } are the transmission bits on the CD-AICH, the PCPCH CD access preamble scrambling code CD-APS
Indicates whether C # m can be authenticated. At this time, each bit {a ₀ , a ₁ ,. . . , A ₁₅ } can be expressed as in the following equation (31).

[Equation 19]

[0211] Here, AI _s are means AI for signature AP # s used {+ 1, -1, 0}
It has any one of the values. Further, c _s and _j are as shown in the table defined in FIG. Also, each bit {b ₀ , b ₁ ,. . . , B ₁₅ } can be expressed as in the following equation (32).

(Equation 20)

Here, RI _m is the PCPCH used.
It means authentication for a preamble scrambling code (ie, APSC # m, CD-APSC # m) and has one of {+1, -1, 0}. Further, _cm and _j are as shown in the table defined in FIG.

In FIG. 31, m = 4 to 15 are coefficients that can be used for other purposes in the future. AICH
Is actually transmitted, each bit {a ₀ , a ₁ ,. . . , A ₁₅ } are transmitted to any one of the I / Q channels and each bit {b ₀ , b ₁ ,. . . , B ₁₅ } are transmitted to another one of the I / Q channels.

At this time, the power ratio for the I / Q channel can be adjusted. That is, the RI part is
For example, when only m = 0 to 3 is used, the channel transmitting the AI portion containing a large amount of data is relatively more than the channel transmitting the RI portion containing a small amount of data. Electricity can be used.

An embodiment in which the channel assignment method is applied to only one of the AP and the CD is also possible.

[0216]

As described above, the physical channel allocation method for a mobile communication system according to the present invention is 3GPP.
In each uplink channel used by a terminal to transmit data to a base station, RAC
If H has an extra scrambling code, it has the effect of enabling efficient channel allocation and thus fully utilizing the RACH resources.

Also, the method for allocating physical channels in a mobile communication system according to the present invention provides a method for allocating physical channels in an uplink channel used when a terminal transmits data to a base station.
AICH suitable for allocating 16 PRACH preamble scrambling codes per cell if RACH has extra uplink scrambling codes
Providing the structure has the effect that the AICH can be used economically.

Further, the physical channel allocation method of the mobile communication system according to the present invention is applied when the uplink shared channel of the mobile communication system needs to consider a reuse factor, so that the efficient physical channel allocation can be performed. The effect of this is that the resource utilization of the shared channel can be improved.

[0219] Furthermore, in the physical channel allocation method for a mobile communication system according to the present invention, in an uplink channel used for transmitting data to a base station by a terminal, CPCH is used for extra uplink scrambling.
Having a code has the effect of enabling efficient physical channel allocation and thus improving the CPCH resource utilization.

[0220] Further, in the physical channel allocation method for a mobile communication system according to the present invention, in an uplink channel used for transmitting data to a base station by a terminal, CPCH is used for extra uplink scrambling.
Having the code has the effect that the AICH can be used efficiently and economically.

Further, the physical channel allocation method of the mobile communication system according to the present invention is applied when the uplink shared channel of the mobile communication system needs to consider a reuse factor, and efficiently allocates the physical channel. This has the effect of making it possible to increase the resource utilization of the shared channel.

Further, in the physical channel allocation method for a mobile communication system according to the present invention, a reuse factor for a CPCH is considered in an uplink channel used by a terminal to transmit data to a base station. If an auxiliary channel is required for efficient and efficient physical channel assignment, an efficient and economical channel can be realized.

Further, the physical channel allocation method of the mobile communication system according to the present invention is applied when the uplink shared channel of the mobile communication system needs to consider a reuse factor, so that the efficient physical channel allocation can be performed. Therefore, there is an effect that the resource utilization of the corresponding shared channel can be improved.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a communication procedure of a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to the embodiment of the present invention, in which all slot definitions are the same for sub-channels.

FIG. 3a is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to an embodiment of the present invention, and shows an example in which the definition of slots differs for each sub-channel.

FIG. 3B is a table showing subchannels belonging to a channel code according to an embodiment of the present invention and definitions of access slots corresponding to the subchannels, showing an example in which the definition of slots differs for each subchannel.

FIG. 3c is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to the embodiment of the present invention, and shows an example in which the definition of slots differs for each sub-channel.

FIG. 3D is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to an embodiment of the present invention, and shows an example in which the definition of slots differs for each sub-channel.

FIG. 4a is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to an embodiment of the present invention. I have.

FIG. 4B is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to an embodiment of the present invention. I have.

FIG. 4c is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to an embodiment of the present invention, showing another example in which the definition of slots differs for each sub-channel. I have.

FIG. 4d is a table showing definitions of sub-channels belonging to a channel code and corresponding access slots according to an embodiment of the present invention, showing another example in which the definition of slots differs for each sub-channel. I have.

FIG. 5 is a configuration diagram illustrating a system for transmitting AICH # m according to an embodiment of the present invention.

FIG. 6 is a diagram illustrating an OVSF code tree for transmitting AICH # m according to an embodiment of the present invention.

FIG. 7 is a configuration diagram illustrating an OVSF code tree for transmitting AICH # m according to an embodiment of the present invention.

FIG. 8 is a configuration diagram showing a structure of AICH # m according to the embodiment of the present invention.

FIG. 9 is a table showing signature patterns used in AICH # m according to the embodiment of the present invention.

FIG. 10 is a flowchart showing a communication procedure of the mobile communication system according to the embodiment of the present invention.

FIG. 11 is a configuration diagram showing a structure of RRICH # m according to the embodiment of the present invention.

FIG. 12 is a configuration diagram illustrating a structure of RRICH # m according to the embodiment of the present invention.

FIG. 13 shows R of RRICH # m according to the embodiment of the present invention.
9 is a table showing an I signature pattern.

FIG. 14 shows R of RRICH # m according to the embodiment of the present invention.
9 is a table showing an I signature pattern.

FIG. 15 shows R of RRICH # m according to the embodiment of the present invention.
9 is a table showing an I signature pattern.

FIG. 16 is a table showing signature patterns for performing AICH transmission according to an embodiment of the present invention.

FIG. 17 is a configuration diagram showing a structure of an AICH according to an embodiment of the present invention.

FIG. 18 is a table showing signature patterns for AI and RI portions of AICH according to an embodiment of the present invention.

FIG. 19 is a flowchart showing a communication procedure of the mobile communication system according to the embodiment of the present invention.

FIG. 20 shows AP-AICH # m according to an embodiment of the present invention.
FIG. 1 is a configuration diagram showing a system for transmitting a message.

FIG. 21 shows CD-AICH # m according to an embodiment of the present invention.
FIG. 1 is a configuration diagram showing a system for transmitting a message.

FIG. 22 shows AP-AICH # m according to an embodiment of the present invention.
FIG. 3 is a configuration diagram showing a tree structure for allocating OVSF codes to CD-AICH # m.

FIG. 23 shows AP-AICH # m according to an embodiment of the present invention.
FIG. 3 is a configuration diagram showing a tree structure for allocating OVSF codes to CD-AICH # m.

FIG. 24 shows AP-AICH # m according to the embodiment of the present invention.
And a configuration diagram showing the structure of CD-AICH # m.

FIG. 25 shows AP-AICH # m according to the embodiment of the present invention.
9 is a table showing signature patterns used in CD-AICH # m and CD-AICH # m.

FIG. 26 is a flowchart showing a communication procedure of the mobile communication system according to the embodiment of the present invention.

FIG. 27 is a table showing a CRICH RI signature pattern according to the embodiment of the present invention.

FIG. 28 is a table showing a CRICH RI signature pattern according to the embodiment of the present invention.

FIG. 29 is a configuration diagram showing a structure of an AICH according to an embodiment of the present invention.

FIG. 30 is a table showing a signature pattern of an AI portion of the AICH according to the embodiment of the present invention.

FIG. 31 is a table showing a signature pattern of an RI portion of the AICH according to the embodiment of the present invention.

FIG. 32 is a configuration diagram illustrating a code tree for RACH channel assignment according to the related art.

FIG. 33 is a configuration diagram showing an OVSF code tree according to the related art.

FIG. 34 is a configuration diagram showing a tree structure for explaining a method of allocating an OVSF code of a message part of a PRACH according to the related art.

FIG. 35 is a flowchart showing a communication procedure of a mobile communication system according to a conventional technique.

FIG. 36 is a configuration diagram showing a structure of a RACH according to the related art.

FIG. 37 is a table showing RACH subchannels in which access slots are defined according to the related art.

FIG. 38 is a block diagram showing a system for spreading a PRACH message part in a terminal according to the related art.

FIG. 39 is a configuration diagram illustrating an OVSF code tree for a message part of a PCPCH according to the related art.

FIG. 40 is a configuration diagram showing a communication method of a mobile communication system according to the related art.

FIG. 41 is a block diagram illustrating a system for spreading a PCPCH message part in a terminal according to the related art.

 ──────────────────────────────────────────────────続 き Continued on the front page (31) Priority claim number 2000-16171 (32) Priority date March 29, 2000 (March 29, 2000) (33) Priority claim country South Korea (KR) (72) Inventor Yong Hoang Kang Seoul, South Korea

Claims (40)

[Claims] 1. A terminal device comprising: a plurality of signatures (APs);
#S), the preamble signature code (C _{sig, s} ) generated using any one of the first and second physical channels (P) of the x first uplinks allowed for the corresponding cell.
RACH) Preamble scrambling code (SC # m) of any one of the first uplink physical channels.
The first uplink physical channel access preamble code (C _{pre, n, s} ) generated using the code (SC # i) and the first uplink physical channel access preamble code (C _{pre, n, s} ) are included in the access preamble (AP). One uplink channel (R
(ACH) to the base station; and the terminal decodes the signature and the type of the first uplink physical channel scrambling code included in the received AP, From the base station that has generated the AI notifying the availability of the signature, the first
Receiving the AI via a downlink channel (AICH # m); and the terminal including a channelization code determined by the approved signature and a physical channel message portion of the first uplink. Scrambling
Transmitting a message to the base station using a code (MSC # m). 2. The first uplink channel is R
ACH # m, wherein the first uplink physical channel is PRAC #
mH, the first downlink channel is AICH # m and / or
Or RRICH # m.
A communication method for a mobile communication system according to claim 1. 3. The terminal, comprising: a plurality of signatures (APs);
#S), a preamble signature code (C _{sig, s} ) generated by using any one of them and x PRACH preamble scrambling codes (SC # m) allowed for the corresponding cell. Any one of PRACH
Pre-ambling scrambling code (SC #
transmitting a PRACH access preamble code (C _{pre, n, s} ) generated using i) to an access preamble (AP) to a base station via a RACH, The terminal decodes the signature included in the received AP and the type of the PRACH scrambling code, and generates an AI for notifying use of the signature from the base station via the AICH # m. Receiving the AI, and the terminal transmits a message to the base station using the channelization code determined by the approved signature and the PRACH message partial scrambling code (MSC # m). Transmitting a mobile communication system. 4. The communication method according to claim 3, wherein the number of the plurality of signatures is 16. 5. The communication method according to claim 3, wherein the number x is arbitrarily determined. 6. The communication method for a mobile communication system according to claim 3, wherein the number x is 2 or more and 16 or less. 7. The plurality of signatures (AP # s)
And the x PRACH preamble scrambling codes (SC # m) are determined by an access service class (ASC) given to an upper layer of a protocol of a terminal and a base station. The communication method for a mobile communication system according to claim 3. 8. The RACH subchannel for each signature, RACH code channel group and each RACH code channel in the RACH code channel group, wherein the higher layer is defined and available for each ASC. 8. The communication method for a mobile communication system according to claim 7, comprising information on items such as groups. 9. The communication method according to claim 8, wherein the RACH code channel group is a set composed of a predetermined number of the x RACH code channels. 10. The communication method according to claim 8, wherein the RACH sub-channel group is a set composed of a predetermined number of 12 RACH sub-channels. 11. The RACH defines sub-channels belonging to the RACH and slots corresponding to the sub-channels, and the definitions are based on the RACH.
4. The communication method for a mobile communication system according to claim 3, wherein the communication channel is similar or different depending on a code channel. 12. The communication method according to claim 3, wherein each of the RACH code channels has a one-to-one correspondence with the PRACH preamble scrambling code. 13. The AICH # m may have a similar downlink scrambling code and a different OVSF.
4. The communication method for a mobile communication system according to claim 3, wherein a code is used. 14. The PRACH message partial scrambling code (MSC # m) includes the PRACH
1: 1 with preamble scrambling code
4. The communication method for a mobile communication system according to claim 3, wherein: 15. The communication method according to claim 3, wherein in the structure of AICH # m, each access slot is repeated in units of x. 16. The one access slot, wherein A
The communication method for a mobile communication system according to claim 15, wherein the communication method comprises an I part and a part that is not transmitted. 17. Each bit (a) included in the AI part
_j ^m ) is given by Where AI _s ^m is determined by the terminal
Acq for signature AP # s transmitted on
17. The movement according to claim 16, wherein the indication indicates a UI indicator, and has one of {+1, -1, 0}, and the b _sj indicates the number of signature patterns. A communication method for a communication system. 18. The communication method of claim 3, wherein the AICH # m further includes an RRICH # m in which a reuse factor of the RACH is considered. 19. The RRICH # m includes the RACH #m.
19. The communication method of a mobile communication system according to claim 18, wherein in AICH # m used for #m, a time during which transmission is interrupted in one access slot is used. 20. The communication method of claim 18, wherein the structure of the RRICH # m is such that each access slot is repeated in units of x. 21. The communication of the mobile communication system according to claim 20, wherein said one access slot is composed of a bit part not transmitted and a bit part (RI) indicating reusability. Method. 22. The RRICH # m
Is used to notify whether the PRACH preamble scrambling code is approved or not, the R
The communication method according to claim 20, wherein each bit included in the I part can be variously mapped. 23. Each bit (b _ki ) of the RI part is expressed by the following _equation : Where RI _m is the PRACH preamble scrambling code (SC #
The communication method for a mobile communication system according to claim 20, wherein the authentication for m) has one of {+1, -1, 0}. 24. The structure of AICH # m in consideration of a reuse factor includes an AI part for notifying whether a signature used is approved or not, and a PRACH preamble / notification used.
19. The communication method for a mobile communication system according to claim 18, comprising an RI part for notifying whether or not the scrambling code is approved and a part not transmitted. 25. Each bit (a) included in the AI portion
_j ) is given by Where AI _s denotes the AI for the signature AP # s used and ｛+1, −
1,0} have any one value in the c _{s, j} is a communication method of a mobile communication system according to claim 24, wherein the indicating the coefficients. 26. Each bit (b _j ) included in the RI portion is represented by the following equation: Where RI _m is the used P
{+1, -1, 0} indicating authentication for RACH preamble scrambling code (SC # m)
The communication method according to claim 24, wherein the communication method has any one of the values, and the _Cm and _j indicate coefficients. 27. The mobile communication system according to claim 18, wherein the RRICH # m can be transmitted from the base station to the terminal per one frame or per each access slot. Method. 28. A terminal comprising a plurality of signatures (A
P # s) and the preamble signature code (Ca _{-acc, s} ) generated using any one of the P # s) and the y second uplink physical channels (PCPCH) allowed for the corresponding cell. -CD) Any one of the physical channels of the second uplink (PCPCH-CD) preamble scrambling code (CDSC # m) in the preamble scrambling code (CDSC # m)
The physical channel (PCPCH-CD) access preamble code (C _{c-cd, n, s} ) of the second uplink generated using i) and the collision detection preamble (CD) Transmitting to a base station via a first uplink channel (CPCH); and transmitting, from the base station that has generated the AI for notifying the CD for detecting whether or not the collision is possible, the information to the base station from the base station. 2. The communication method according to claim 1, further comprising: receiving the AI through two downlink channels (CD-AICH # m). 29. The first uplink is a CPCH and the first uplink physical channel is a PCPCH
The communication method of claim 28, wherein the first downlink is AP-AICH # m and the second downlink is CD-AICH # m. 30. A terminal comprising a plurality of signatures (A
P # s), and a preamble signature code (C _{sig, s} ) generated using any one of them and x PCPCH preamble scrambling codes (APSC # m) allowed for the corresponding cell. ) Any one PC
The PCCH access preamble code (C _{pre, n, s} ) generated using the PCH preamble scrambling code (APSC # i) and the PCCH access preamble code (C _{pre, n, s} ) are included in the access preamble (AP), and the CPCH is transmitted. Transmitting the signature to the received AP and the type of the PCPCH scrambling code included in the received AP, and generating an AI for notifying whether the signature can be used or not. A from the station via AP-AICH # m
Receiving the I, a preamble signature code ( _{Ca-acc, s} ) generated by using one of the plurality of signatures (AP # s), and a corresponding cell Y allowed for
One PCPC in the PCPCH-CD preamble scrambling codes (CDSC # m)
PCPCH-C generated using H-CD preamble scrambling code (CDSC # i)
D access preamble code (C _{c-cd, n, s} )
On the collision detection preamble (CD)
H. transmitting to the base station via H. The terminal generates an AI for notifying the CD for detecting whether or not a collision is possible from the base station to the CD-A.
Receiving the AI via ICH # m, and the terminal using a channelization code determined by the approved signature and the PRACH message partial scrambling code (MSC # m), Transmitting a message to the base station. 31. The PCPCH access preamble scrambling code comprises the AP-AI
The PCPCH CD has a 1: 1 correspondence with CH # m.
The communication method for a mobile communication system according to claim 30, wherein the access preamble scrambling code has a one-to-one correspondence with the CD-AICH # m. 32. If the x is 64, the number of CPCH code channels is 4, and each of the CPCH
31. The method of claim 30, wherein the code channel has 16 PCPCH scrambling codes. 33. The mobile communication system according to claim 30, wherein in the AP-AICH # m or the CD-AICH # m, each access slot is repeated in units of x. Communication method. 34. The communication method for a mobile communication system according to claim 33, wherein said access slot comprises an AI part and a part not transmitted. 35. The AP-AICH # m is an AP-CR
ICH # m, wherein the CD-AICH # m is C
The communication method for a mobile communication system according to claim 30, further comprising D-CRICM # m. 36. The AP-CRICH # m and / or the CD-CRICH # m may be an AP-AICH # m and / or a CD-AI used for the CPCH # m.
The communication method for a mobile communication system according to claim 35, wherein the CH # m uses a time during which bit transmission in one access slot is interrupted. 37. The AP-CRICH # m and the CD-CRICH # m
The communication method according to claim 36, wherein the structure of CRICH # m is such that each access slot repeats in units of x. 38. The communication of the mobile communication system according to claim 36, wherein said one access slot is constituted by a bit part not transmitted and a bit part (RI) indicating reusability. Method. 39. The AP-CRICH # m and CD-
When CRICH # m is used to notify whether the PCPCH preamble scrambling code and the PCPCH CD preamble scrambling code are approved, each bit included in the RI part can be variously mapped. 37. The method of claim 36, wherein
A communication method for a mobile communication system according to claim 1. 40. The AP-CR in consideration of a reuse factor.
The structures of the ICH # m and the CD-CRICH # m include an AI part for notifying whether the used signature is approved or not, and an RI part for notifying whether the used PRACH preamble scrambling code is approved or not, and a part not transmitted. 35. The communication method for a mobile communication system according to claim 34, comprising: